The Lens Adapter Tube (CLA-12) for XZ1 from Olympus is a conversion adapter designed for the XZ1 camera--it's required in order to mount the TCON-17X 1.7x teleconvertor to the camera. The TCON-17X increases the apparent focal length of the XZ1 lens by 1.7x. This means the 28-112mm lens on the XZ1 would be increased to 47.6-190.4mm (35mm equivalent). This CLA-12 adapter has a screw diameter of 55mm and a length of 1.6" (4.1 cm).
Reviews Olympus Lens Adapter Tube (CLA-12) for XZ1